“Christelle” is a word for something or someone that you
will miss when undergoing a new
phase in life. Any activity, person, etc, that you
will miss when moving to a new phase in life can be called a “Christelle”. It doesn’t have to be something/someone that completely disappears; it could just be something/someone that
will be more geographically distant while remaining very important to your life. An example would be significant coworkers at a
job you’re leaving or students at a school you’re graduating from. It usually is meant to denote something/someone that is very special, resulting in feelings of sadness when moving away from them.